CN207095970U - A kind of piston rod type abnormal shape valve hydraulic clamping device - Google Patents
A kind of piston rod type abnormal shape valve hydraulic clamping device Download PDFInfo
- Publication number
- CN207095970U CN207095970U CN201720825083.7U CN201720825083U CN207095970U CN 207095970 U CN207095970 U CN 207095970U CN 201720825083 U CN201720825083 U CN 201720825083U CN 207095970 U CN207095970 U CN 207095970U
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- piston rod
- bearing bracket
- rear end
- end cap
- cylinder body
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Abstract
The utility model discloses a kind of piston rod type abnormal shape valve hydraulic clamping device, including two grip units being oppositely arranged, two grip unit compositions clamp the multipoint clamping mechanism of special-shaped valve；Each grip unit includes support and lays multiple pressure cylinders on the bracket, and the piston rod of multiple pressure cylinders in the multipoint clamping mechanism is in the laying that is parallel to each other.The utility model can be clamped by the way of multipoint clamping to through type a, through type c, different shaft type, angie type a, four class abnormal shape valvings.
Description
Technical field
The utility model belongs to device for valve pressure testing technical field, more particularly to a kind of piston rod type abnormal shape valve liquid
Press clamping device.
Background technology
In the Quality inspection of valve, pressure test is carried out to valve come to examine the intensity of valve and sealing be very heavy
The test stage wanted, pressure test are by the way that the interface of valve is connected with pressure source by connecting pipe, and pressurising is carried out to valve
To examine its intensity and sealing, wherein (special-shaped valve is the general designation of complex-shaped small path valve, is had to special-shaped valve
Through type, angie type, different shaft type, three way type, single flow, plunger type etc. are a variety of, inside nominal diameter DN6~32, nominal pressure 1.6MPa
~42.0MPa, predominantly needle stop valve, also a small amount of ball valve, choke valve.) when carrying out pressure test, the examination of special-shaped valve highest
Pressure is tested up to 63MPa, if not fixing, valve has the security risk for flying out and hurting sb.'s feelings in experiment, in addition, special-shaped valve handle
Tightly, if not fixing, the handy hand of opening/shutting valve is twisted, and very difficultly, labor intensity is huge, has a strong impact on checkability.Such as Fig. 6 institutes
Show, according to the shape and structure similarity degree of valve, the shape of more than 90% special-shaped valve can divide following 8 major class, i.e. through type a,
Through type b, through type c, different shaft type, angie type a, angie type b, three way type a, three way type b.Fixture of the prior art is mainly up and down
Fixation of the valve realization to valve is clamped, can only fixed part through type abnormal shape valve.
Utility model content
Technical problem to be solved in the utility model is to be directed to above-mentioned deficiency of the prior art, there is provided a kind of piston
Rod-type abnormal shape valve hydraulic clamping device, can be to through type a, through type c, different shaft type, angie type by the way of multipoint clamping
A, four class abnormal shape valvings are clamped.
In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of piston rod type abnormal shape valve liquid
Press clamping device, it is characterised in that：Including two grip units being oppositely arranged, two grip unit composition clampings are special-shaped
The multipoint clamping mechanism of valve；Each grip unit includes the multiple pressure cylinders of support and laying on the bracket,
The piston rod of multiple pressure cylinders in the multipoint clamping mechanism is in the laying that is parallel to each other.
A kind of above-mentioned piston rod type abnormal shape valve hydraulic clamping device, it is characterised in that：The cylinder of multiple pressure cylinders
Body is grinding pipe, and the support includes the drive end bearing bracket blocked to the front port of cylinder body and rear end of the cylinder block mouth is blocked
Rear end cap, the rear end cap and drive end bearing bracket lay multiple pressure cylinders on the bracket in the laying that is parallel to each other
Cylinder body is installed between drive end bearing bracket and rear end cap, and the through hole clamped to the front end of cylinder body is offered on the drive end bearing bracket,
Offered on the rear end cap and clamping blind hole is carried out to the rear end of cylinder body, the front end of the piston rod extend out to the outer of drive end bearing bracket
Side, the piston rod and drive end bearing bracket are perpendicular.
A kind of above-mentioned piston rod type abnormal shape valve hydraulic clamping device, it is characterised in that：It is laid with the drive end bearing bracket
The first pipeline connected with the rod chamber of multiple cylinder bodies, it is laid with multiple cylinder bodies without bar on the rear end cap
The second pipeline that chamber connects, is laid with the first interface with the first pipeline connection on the drive end bearing bracket, cloth on the rear end cap
Provided with the second interface with the second pipeline connection.
A kind of above-mentioned piston rod type abnormal shape valve hydraulic clamping device, it is characterised in that：The front end of the cylinder body penetrates
In through hole and with the back-end sealing of through hole, the rear end of the cylinder body penetrate in blind hole and with the forward end seal of blind hole.
A kind of above-mentioned piston rod type abnormal shape valve hydraulic clamping device, it is characterised in that：It is provided with the drive end bearing bracket
The screw plug that multiple front ports to each cylinder body are blocked, multiple screw plugs are set on multiple piston rods.
A kind of above-mentioned piston rod type abnormal shape valve hydraulic clamping device, it is characterised in that：Offered on the drive end bearing bracket
It is multiple with the first relief hole of the first pipeline connection, offered on the rear end cap multiple with the second pipeline connection the second pressure release
Hole, blocking component is provided with first relief hole and the second relief hole.
A kind of above-mentioned piston rod type abnormal shape valve hydraulic clamping device, it is characterised in that：The drive end bearing bracket of the support and
Rear end cap is fixedly connected by more bolts.
A kind of above-mentioned piston rod type abnormal shape valve hydraulic clamping device, it is characterised in that：The drive end bearing bracket and rear end cap
It is cube end cap, the more piston rods of each grip unit are laid in multiple rows of multiple row.
A kind of above-mentioned piston rod type abnormal shape valve hydraulic clamping device, it is characterised in that：The front end of the piston rod is
Bare terminal end, the front end of the piston rod are enclosed with rubber sleave.
A kind of above-mentioned piston rod type abnormal shape valve hydraulic clamping device, it is characterised in that：Also include base, described in two
Grip unit is laid on base；The support also includes bottom baffle, the top being laid between drive end bearing bracket and rear end cap
Baffle plate, the first sidepiece baffle plate and the second sidepiece baffle plate；The drive end bearing bracket, rear end cap, bottom baffle, top flap, the first sidepiece
The cylinder body that baffle plate and the second sidepiece baffle plate form the multiple pressure cylinders to being installed between drive end bearing bracket and rear end cap enters
The housing of row protection.
The utility model has advantages below compared with prior art：
1st, the utility model carries out multipoint clamping to different in nature valve by being oppositely arranged two grip units, and clamping is stable,
Meet the demand clamped to tetra- kinds of through type a, through type c, different shaft type, angie type a special-shaped valves.
2nd, each grip unit of the utility model uses multiple pressure cylinders, and each pressure cylinder is separate, at certain
During individual pressure cylinder failure, other pressure cylinders still can continue to work.
In summary, the utility model, can be to through type a, through type c, different shaft type, angle by the way of multipoint clamping
The class abnormal shape valvings of formula a tetra- are clamped.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model grip unit.
Fig. 3 is Fig. 2 vertical view cutaway drawing.
Fig. 4 is the internal structure schematic diagram of the utility model rear end cap.
Fig. 5 is the internal structure schematic diagram of the utility model drive end bearing bracket.
Fig. 6 is the structural representation of 8 class abnormal shape valves.
Description of reference numerals:
1-base；2-grip unit；2-1-drive end bearing bracket；
2-2-rear end cap；2-3-cylinder body；3-piston rod；
4-through hole；5-blind hole；6-the first pipeline；
7-the second pipeline；8-bottom baffle；9-top flap；
10-the first sidepiece baffle plate；11-the second sidepiece baffle plate；12-screw plug；
13-the first relief hole；14-the second relief hole；15-bolt；
16-screwed hole；17-rubber sleave；18-ladder hole；
19-first interface；20-second interface.
Embodiment
As shown in figure 1, the utility model includes two grip units 2 being oppositely arranged, two grip units 2 form
Clamp the multipoint clamping mechanism of special-shaped valve；Each grip unit 2 includes support and lays on the bracket more
Individual pressure cylinder, the piston rod 3 of multiple pressure cylinders in the multipoint clamping mechanism is in the laying that is parallel to each other.
It should be noted that tetra- kinds of through type a, through type c, different shaft type, angie type a special-shaped valvings are respectively provided with parallel put down
Face or parallel surfaces, when being clamped in practice to four kinds of special-shaped valves, a part of piston rod 3 in more piston rods 3
End withstand on the valve body of special-shaped valve, another part piston rod 3 is interspersed between the space of special-shaped valve, two parts piston
Bar 3 coordinates together, and special-shaped valve is fixed.Two grip units 2 are oppositely arranged, and make to carry out multiple spot folder to the special-shaped valve
Clamped when holding stable；Each grip unit 2 uses multiple pressure cylinders, and each pressure cylinder is separate, in some pressure
During cylinder failure, other pressure cylinders still can continue to work.
As shown in Fig. 2~Fig. 5, in the present embodiment, the cylinder body 2-3 of multiple pressure cylinders is that grinding is managed, the support
It is described including the drive end bearing bracket 2-1 blocked to cylinder body 2-3 front end and the rear end cap 2-2 blocked to cylinder body 2-3 rear ends
Rear end cap 2-2 and drive end bearing bracket 2-1 is in the laying that is parallel to each other, and lays the cylinder body 2-3 of multiple pressure cylinders on the bracket
It is installed between drive end bearing bracket 2-1 and rear end cap 2-2, is offered on the drive end bearing bracket 2-1 and cylinder body 2-3 front end is clamped
Through hole 4, offer on the rear end cap 2-2 and cylinder body 2-3 rear end carried out to clamp blind hole 5, the front end of the piston rod 3 is stretched
Go out perpendicular to drive end bearing bracket 2-1 outside, the piston rod 3 and drive end bearing bracket 2-1.
It should be noted that multiple cylinder body 2-3 are fixed by using drive end bearing bracket 2-1 and rear end cap 2-2, make
The carry out expanding-contracting action that piston rod 3 can be stablized, improves the clamping stability to special-shaped valve.
As shown in Fig. 2~Fig. 5, in the present embodiment, be laid with the drive end bearing bracket 2-1 has with multiple cylinder body 2-3
The first pipeline 6 that rod cavity connects, it is laid with what is connected with multiple cylinder body 2-3 rodless cavity on the rear end cap 2-2
Second pipeline 7, is laid with the first interface 19 connected with the first pipeline 6 on the drive end bearing bracket 2-1, cloth on the rear end cap 2-2
Provided with the second interface 20 connected with the second pipeline 7.
It should be noted that in real work, the first interface 19 and second interface 20 by hydraulicdirectional control valve with
The connection of one hydraulic pump, when needing to extend piston rod 3, hydraulic pump is by hydraulicdirectional control valve to the input pressure of second interface 20
Oil, pressure oil flow to multiple cylinder body 2-3 rodless cavity through the second pipeline 7, and pressure oil promotes piston rod 3 to travel forward, living
Stopper rod 3 extends；When needing to shrink piston rod 3, the pressure oil of hydraulic pump output is commutated by hydraulicdirectional control valve, is started through first
The pipeline 6 of interface 19 and first flows to multiple cylinder body 2-3 rod chamber, and piston rod 3 starts to move backward, multiple cylinder bodies
Pressure oil in 2-3 rodless cavity begins through hydraulicdirectional control valve source and returned in the fuel tank connected with hydraulic pump.
In the present embodiment, the front end of the cylinder body 2-3 penetrate in through hole 4 and with the back-end sealing of through hole 4, the cylinder body 2-
3 rear end penetrate in blind hole 5 and with the forward end seal of blind hole 5.
It should be noted that described be sealed into what is realized by the sealing ring being set on cylinder body 2-3, sealing is in order to anti-
The only leakage of pressure oil.
As shown in Figures 2 and 3, in the present embodiment, be provided with the drive end bearing bracket 2-1 it is multiple to each cylinder body 2-3 before
The screw plug 12 that port is blocked, multiple screw plugs 12 are set on multiple piston rods 3.
It should be noted that the screw plug 12 is the screw plug of hollow structure.Before the screw plug 12 is fixedly mounted on through hole 4
End.The screw plug 12 is sealed with piston rod 3, and the end of the screw plug 12 is stretched into through hole 4 and by being set in the end of screw plug 12
Sealing ring sealed with through hole 4.Directly process through hole 14 coordinates realization to carry out cylinder body 2-3 front port with the sealing of piston rod 3
Closure, difficulty is big, and cost is high, and screw plug 12 directly can commercially be bought, so realizing piston rod 3 and through hole using screw plug 12
Sealing between 4, cost can be reduced, if piston rod 3 directly contacts with through hole 14 in addition, long-term flexible of piston rod 3 can wear
Through hole 14, cause the aperture of through hole 14 to become big, now can only just change drive end bearing bracket 2-1, so using screw plug 12 to through hole 14
After protection, piston rod 3 only need to change screw plug 12 after long-term stretch.
As shown in Figure 4 and Figure 5, in the present embodiment, offer and multiple connect with the first pipeline 6 on the drive end bearing bracket 2-1
First relief hole 13, offers multiple the second relief holes 14 connected with the second pipeline 7 on the rear end cap 2-2, and described first
Blocking component is provided with the relief hole 14 of relief hole 13 and second.
It should be noted that the quantity of first relief hole 13 is 4,4 first relief holes 13 open up side by side
On drive end bearing bracket 2-1；The quantity of second relief hole 14 is 4, and 4 second relief holes 14 are opened in rear end cap side by side
On 2-2.The purpose for opening up the first relief hole 13 is, prevents that the pressure in the first pipeline 6 is excessive, damages cylinder body 2 and drive end bearing bracket
2-1, the purpose for opening up the second relief hole 14 are, prevent that the pressure in the second pipeline 7 is excessive, damage cylinder body 2 and rear end cap 2-
2.The blocking component is made up of tack jackscrew and the sealing gasket being arranged on the tack jackscrew.
As shown in Fig. 2~Fig. 5, in the present embodiment, the drive end bearing bracket 2-1 and rear end cap 2-2 of the support pass through more bolts
15 are fixedly connected.
It should be noted that offering multiple ladder holes 18 on the rear end cap 2-2, opened up on the drive end bearing bracket 2-1
There are multiple screwed holes 16 corresponding with multiple ladder holes 18, the end of the bolt 15 passes through ladder hole 18 and screwed hole
16 screw threads coordinate installation, and the head of the bolt 15 is pressed in the plane in ladder hole 18.Each the inside of grip unit 2
The quantity of screwed hole 16, ladder hole 18 and bolt 15 is 8, and 8 bolts 15 are divided to for two groups, every group of 4 spiral shells
Bolt 15 is in a row laid.By laying bolt 15, drive end bearing bracket 2-1 and rear end cap 2-2 is interfixed, make to be installed on drive end bearing bracket 2-1
Cylinder body 2-3 between rear end cap 2-2 is more stable, improves the overall structure stability of the grip unit 2.
As depicted in figs. 1 and 2, in the present embodiment, the drive end bearing bracket 2-1 and rear end cap 2-2 are cube end cap, each
The more piston rods 3 of the grip unit 2 are laid in multiple rows of multiple row.
It should be noted that a grip unit has 16 pressure cylinders, existing 16 piston rods 3, this 16 institutes
State and laid in piston rod 3 grip unit 2 in four rows and four columns.The excellent of more piston rods 3 of laying is laid using multiple rows of multiple row
Point is that it is possible to the area of the effectively rectangular front face using the drive end bearing bracket 2-1, can also ensure multiple piston rods
3 end can complement each other to form a piece of clamping zone.
As shown in Figures 2 and 3, in the present embodiment, the front end of the piston rod 3 is bare terminal end, the front end of the piston rod 3
It is enclosed with rubber sleave 17.
It should be noted that in the purpose that the front end of piston rod 3 is enclosed with rubber sleave 17 being, prevent from crushing special-shaped valve
Door.
As shown in figure 1, in the present embodiment, in addition to base 1, two grip units 2 are laid on base 1；Institute
State bottom baffle 8, top flap 9, the first sidepiece baffle plate that support also includes being laid between drive end bearing bracket 2-1 and rear end cap 2-2
10 and the second sidepiece baffle plate 11；The drive end bearing bracket 2-1, rear end cap 2-2, bottom baffle 8, top flap 9, the first sidepiece baffle plate 10
And second sidepiece baffle plate 11 form one to the cylinder for the multiple pressure cylinders being installed between drive end bearing bracket 2-1 and rear end cap 2-2
The housing that body 2-3 is protected.
It should be noted that being provided with two gap on the second sidepiece baffle plate 11, two gap avoid second
Sidepiece baffle plate 11 blocks first interface 19 and second interface 20.By setting housing, guarantor is served to multiple cylinder body 2-3
Shield acts on, in addition also when cylinder body 2-3 occurs quick-fried broken, it is therefore prevented that pressure oil and cylinder body fragment fly out, and injure staff.
The utility model is in use, first interface 19 and second interface 20 are connected with hydraulic pump, it would be desirable to is pressed
The special-shaped valve of power experiment is prevented between two grip units 2, is then turned on hydraulic pump, oil is sent to second interface 20, living
Stopper rod 3, which extends, clamps special-shaped valve, after the completion of pressure test, hydraulic pump is sent to first interface 19 by hydraulicdirectional control valve
Oil, now second interface 20 is fuel-displaced, and piston rod 3 shrinks, and then takes out proof special-shaped valve.
It is described above, only it is preferred embodiment of the present utility model, not the utility model is imposed any restrictions, every
Any simple modification, change and the equivalent structure change made according to the utility model technical spirit to above example, still
Belong in the protection domain of technical solutions of the utility model.
Claims (10)
- A kind of 1. piston rod type abnormal shape valve hydraulic clamping device, it is characterised in that：Including two grip units being oppositely arranged (2), two grip unit (2) compositions clamp the multipoint clamping mechanism of special-shaped valve；Each grip unit (2) is wrapped Include support and lay multiple pressure cylinders on the bracket, the piston of multiple pressure cylinders in the multipoint clamping mechanism Bar (3) is in the laying that is parallel to each other.
- 2. according to a kind of piston rod type abnormal shape valve hydraulic clamping device described in claim 1, it is characterised in that：It is multiple described The cylinder body (2-3) of pressure cylinder is grinding pipe, and the support includes the drive end bearing bracket blocked to the front port of cylinder body (2-3) (2-1) and the rear end cap (2-2) blocked to cylinder body (2-3) rear port, the rear end cap (2-2) are in drive end bearing bracket (2-1) Be parallel to each other laying, lay multiple pressure cylinders on the bracket cylinder body (2-3) be installed on drive end bearing bracket (2-1) and Between rear end cap (2-2), the through hole (4) clamped to the front end of cylinder body (2-3), institute are offered on the drive end bearing bracket (2-1) State to offer on rear end cap (2-2) and clamping blind hole (5) is carried out to the rear end of cylinder body (2-3), the front end of the piston rod (3) is stretched out To drive end bearing bracket (2-1) outside, the piston rod (3) and drive end bearing bracket (2-1) are perpendicular.
- 3. according to a kind of piston rod type abnormal shape valve hydraulic clamping device described in claim 2, it is characterised in that：The front end The first pipeline (6) connected with the rod chamber of multiple cylinder bodies (2-3), the rear end cap (2-2) are laid with lid (2-1) On be laid with the second pipeline (7) connected with the rodless cavity of multiple cylinder bodies (2-3), laid on the drive end bearing bracket (2-1) There is the first interface (19) connected with the first pipeline (6), be laid with what is connected with the second pipeline (7) on the rear end cap (2-2) Second interface (20).
- 4. according to a kind of piston rod type abnormal shape valve hydraulic clamping device described in claim 3, it is characterised in that：The cylinder body The front end of (2-3) penetrates in through hole (4) and penetrates blind hole (5) with the back-end sealing of through hole (4), the rear end of the cylinder body (2-3) It is interior and with the forward end seal of blind hole (5).
- 5. according to a kind of piston rod type abnormal shape valve hydraulic clamping device described in claim 4, it is characterised in that：The front end The screw plug (12) that multiple front ports to each cylinder body (2-3) are blocked, multiple screw plugs (12) are provided with lid (2-1) It is set on multiple piston rods (3).
- 6. according to a kind of piston rod type abnormal shape valve hydraulic clamping device described in claim 3, it is characterised in that：The front end Multiple the first relief holes (13) connected with the first pipeline (6) are offered on lid (2-1), are offered on the rear end cap (2-2) Multiple the second relief holes (14) connected with the second pipeline (7), in first relief hole (13) and the second relief hole (14) It is provided with blocking component.
- 7. according to a kind of piston rod type abnormal shape valve hydraulic clamping device described in any claim in claim 2 to 6, It is characterized in that：The drive end bearing bracket (2-1) of the support is fixedly connected with rear end cap (2-2) by more bolts (15).
- 8. according to a kind of piston rod type abnormal shape valve hydraulic clamping device described in any claim in claim 2 to 6, It is characterized in that：The drive end bearing bracket (2-1) and rear end cap (2-2) are cube end cap, and each the grip unit (2) is more Piston rod described in root (3) is laid in multiple rows of multiple row.
- 9. according to a kind of piston rod type abnormal shape valve hydraulic clamping device described in any claim in claim 1 to 6, It is characterized in that：The front end of the piston rod (3) is bare terminal end, and the front end of the piston rod (3) is enclosed with rubber sleave (17).
- 10. filled according to a kind of piston rod type abnormal shape valve hydraulic clamping described in any claim in claim 2 to 6 Put, it is characterised in that：Also include base (1), two grip units (2) are laid on base (1)；The support also wraps Include the bottom baffle (8) being laid between drive end bearing bracket (2-1) and rear end cap (2-2), top flap (9), the first sidepiece baffle plate And the second sidepiece baffle plate (11) (10)；The drive end bearing bracket (2-1), rear end cap (2-2), bottom baffle (8), top flap (9), One sidepiece baffle plate (10) and the second sidepiece baffle plate (11) form one to being installed between drive end bearing bracket (2-1) and rear end cap (2-2) Multiple pressure cylinders the housing protected of cylinder body (2-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720825083.7U CN207095970U (en) | 2017-07-08 | 2017-07-08 | A kind of piston rod type abnormal shape valve hydraulic clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720825083.7U CN207095970U (en) | 2017-07-08 | 2017-07-08 | A kind of piston rod type abnormal shape valve hydraulic clamping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207095970U true CN207095970U (en) | 2018-03-13 |
Family
ID=61555878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720825083.7U Expired - Fee Related CN207095970U (en) | 2017-07-08 | 2017-07-08 | A kind of piston rod type abnormal shape valve hydraulic clamping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207095970U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548665A (en) * | 2018-04-29 | 2018-09-18 | 长庆石油勘探局技术监测中心 | The special-shaped valve burst pressure force test system and test method of Pneumatic driving type clamping |
| CN108776010A (en) * | 2018-04-29 | 2018-11-09 | 长庆石油勘探局技术监测中心 | Special-shaped valve pressure test platform |
| CN108801773A (en) * | 2018-04-29 | 2018-11-13 | 长庆石油勘探局技术监测中心 | The online pilot system of special-shaped valve pressure and test method |
| CN108801575A (en) * | 2018-04-29 | 2018-11-13 | 长庆石油勘探局技术监测中心 | The special-shaped valve burst pressure force test system and test method of hydraulic drive type clamping |
| CN110173585A (en) * | 2018-06-26 | 2019-08-27 | 哈尔滨智泓科技服务有限公司 | A kind of valve clamp device |
| WO2022088735A1 (en) * | 2020-10-29 | 2022-05-05 | 长鑫存储技术有限公司 | Leak detection apparatus |
-
2017
- 2017-07-08 CN CN201720825083.7U patent/CN207095970U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548665A (en) * | 2018-04-29 | 2018-09-18 | 长庆石油勘探局技术监测中心 | The special-shaped valve burst pressure force test system and test method of Pneumatic driving type clamping |
| CN108776010A (en) * | 2018-04-29 | 2018-11-09 | 长庆石油勘探局技术监测中心 | Special-shaped valve pressure test platform |
| CN108801773A (en) * | 2018-04-29 | 2018-11-13 | 长庆石油勘探局技术监测中心 | The online pilot system of special-shaped valve pressure and test method |
| CN108801575A (en) * | 2018-04-29 | 2018-11-13 | 长庆石油勘探局技术监测中心 | The special-shaped valve burst pressure force test system and test method of hydraulic drive type clamping |
| CN110173585A (en) * | 2018-06-26 | 2019-08-27 | 哈尔滨智泓科技服务有限公司 | A kind of valve clamp device |
| CN110173585B (en) * | 2018-06-26 | 2020-08-14 | 绍兴柯桥新兴门业有限公司 | Valve fastening device |
| WO2022088735A1 (en) * | 2020-10-29 | 2022-05-05 | 长鑫存储技术有限公司 | Leak detection apparatus |
| US11988576B2 (en) | 2020-10-29 | 2024-05-21 | Changxin Memory Technologies, Inc. | Leak test device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180313 Termination date: 20180708 |
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| CF01 | Termination of patent right due to non-payment of annual fee |